Other notable enhancements in this release:
- The physical Menu button can toggle the menu (useful only if your device does have a physical Menu button)
- You can now set a "start-up" section for the app (experimental)
Both options can be configured from the app's settings, as shown below.
In case you run into any problems by selecting a default section that "misbehaves" (unlikely, but just in case), you can always force all settings to their default value by going to the phone's Settings -> Apps -> Flickr Mobile and tap on "Clear data".
Warning: only use this as a last resort, since you'll have to login again afterwards.